chrome/browser/task_manager/guest_resource_provider.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_TASK_MANAGER_GUEST_RESOURCE_PROVIDER_H_
   6 #define CHROME_BROWSER_TASK_MANAGER_GUEST_RESOURCE_PROVIDER_H_
   7
   8 #include <map>
   9
  10 #include "base/basictypes.h"
  11 #include "chrome/browser/task_manager/resource_provider.h"
  12 #include "content/public/browser/notification_observer.h"
  13 #include "content/public/browser/notification_registrar.h"
  14
  15 class TaskManager;
  16
  17 namespace content {
  18 class RenderViewHost;
  19 }
  20
  21 namespace task_manager {
  22
  23 class GuestResource;
  24
  25 class GuestResourceProvider : public ResourceProvider,
  26                               public content::NotificationObserver {
  27  public:
  28   explicit GuestResourceProvider(TaskManager* task_manager);
  29
  30   // ResourceProvider methods:
  31   virtual Resource* GetResource(int origin_pid,
  32                                 int child_id,
  33                                 int route_id) OVERRIDE;
  34   virtual void StartUpdating() OVERRIDE;
  35   virtual void StopUpdating() OVERRIDE;
  36
  37   // content::NotificationObserver method:
  38   virtual void Observe(int type,
  39                        const content::NotificationSource& source,
  40                        const content::NotificationDetails& details) OVERRIDE;
  41
  42  private:
  43   virtual ~GuestResourceProvider();
  44
  45   void Add(content::RenderViewHost* render_view_host);
  46   void Remove(content::RenderViewHost* render_view_host);
  47
  48   // Whether we are currently reporting to the task manager. Used to ignore
  49   // notifications sent after StopUpdating().
  50   bool updating_;
  51
  52   TaskManager* task_manager_;
  53
  54   typedef std::map<content::RenderViewHost*, GuestResource*> GuestResourceMap;
  55   GuestResourceMap resources_;
  56
  57   // A scoped container for notification registries.
  58   content::NotificationRegistrar registrar_;
  59
  60   DISALLOW_COPY_AND_ASSIGN(GuestResourceProvider);
  61 };
  62
  63 }  // namespace task_manager
  64
  65 #endif  // CHROME_BROWSER_TASK_MANAGER_GUEST_RESOURCE_PROVIDER_H_